Super Natural Calcium provides calcium as it is found in nature and is now fortified with magnesium, which works in harmony by helping muscles relax. Plant-based calcium is estimated to be two times more bioavailable than other calcium supplements available today. Calcium is needed by all humans, at all times, at all ages. Muscles cannot contract without calcium, meaning you couldn’t walk, run, or pump blood to your brain without it. It’s needed for the proper synthesis of collagen, and therefore, healthy bones.